Internal-combustion engine.



` UiviTnD srafrps PATENT onirica.'

Josnrt I. s'iEvENsoN, or s'r. LoU'Is, MIs'sURI.

nvrnmvar. 00MBUs'rI'oNv ENGINE.'

To all whom t may concern:

Re it known that I, JosnrI-I I. S'rnvnNsoN, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Internal- .lomhustion Engines, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same. v

This invention relates to internal combustion engines, and has for its object. to provide an internal combustion engine in which the admission and exhaust of'the gases is controlled by a rotatable valve or valves of novel design.

Figure l of the drawings is a vertical sectional. view of one cylinder of an internal combustion engine constructed in accordance with my invention; Fig. 2 is a topv plan -view showing the head of the cylinder removed; and Fig. 3 is a vertical sectional view taken through the head of the cylinder on approximately the line liv-3 of Fig. 2.

Referring to Figs. l, 2 and 3 of the dra-wings which illustrate the preferred formof my invention, A designates one cylinder of lthe engine, B the piston that is mounted therein, C the head of the cylinder which is preferably provided with a water-jacket that communicates with the water-jacket that surrounds the cylinder, and D and E th intake and exhaust pipes,respectively,

Y that' communicate wit-h an admission port Z and an exhaust port e, respectively, formed in the head of the cylinder, as shown in Fig.

3. The 'head C is detachably connected tol the cylinder by bolts or other suitable fastening devices l, and a spark plug 2 of any preferred type is mounted in an opening formed in the head C preferably at the center thereof.

The valve which controls the admission and exhaust of the gases consists of a rotatable disk F that is arranged on the under side of the head C of the cylinder, and said valve is provided with ports which permit (he gases to enter and escape from the cylinder at certain periods in the cycle of operations of the engine. The engine shown in Figs. l to 3 is a. four-cycle engine which is so designed that the crank shaft makes four revolutions to one revolution' of the valve F and therefore said valve is provided with two ports 3 and 4, but I do not wish it to be understoodt-hat my invent-ion Speccatio of L 'ettels Patent.

' Application led December 4, 1911. Serial No. 663,886.

.The top wall A the explosion of the Patented July 1 1913.

pro-vided with two ports for the4 valve could be timed in various other ways without departing from the spirit of my invention. I prefer to Wall A', as sho-wn in Figsl and 3, which is spaced away from the under side of the head C a distance equal to the thickness'of the valve yF, said top wall A havin ports d and c that aline with the ports dgand e, respectively, in the head C of the cylinder. of the cylinder protects the excessive heat produced by ses in the'eylinder, and it coperates witgii t-li'e head C of the cylinder to form: a housing or chamber whose walls embrace the top' and bottom far-,es oi the valve and thusreduce the tend'-, ency of'the valve to Warp'. The valve F valve from the which is arranged" inside 'of said chamber or housing is rotatably Inm'mted on a bearing at the center of the head of the cylirr der, and, if d'esi'redf,saifd valve can be pro; vided at its periphery with' an annular flange (i so as to reinforce kand strengthen the valve and thu-s further reduce the possibility of warping, the head C of the cylinder being provided on its under side with an annular channel or groove 7 which receives said flange.

Any suitable means may be used for rotating the valves F of the engine, such, for example, as a spiral gear 8 on the crank shaft 9 of the engine that cooperates with a spiral gear-10 on the lower end of a vertically disposed valve-actuating shaft l1, as shown in Figs. l and 2. The valve shaft l1 is provided with a gear l2 that meshes wit-li a gear 13 on the peripheral edge of the valve F of the firstcylinder of the engine, and the gear 13 on said valve meshes with a. similar gear 13a on the valve F of the second cylinder, the valves of all of the cy1- inders being connected .together and arranged in such a manner that the charges in the different cylinders will be compressed and ignited in the proper sequence.

When the'piston B moves downwardly on its suction stroke one of the openings in the valve alines with the admission ports d and d in the head vC and in the top wall A of the cylinder and thus permits a charge to be drawn into the cylinder. During the two succeeding strokes of the piston, namely, the compression stroke and power strokes, the valve F closes the, admission and exhaust provide the cylinder with a top is limited to an engine in which the valve is ports in the top wallof the cylinder and in the head C, and on the scavenging stroke of the piston one of the ports in the valv alines withV the exhaust ports e and c and thus permits the burntgases to escape from the cylinder through the exhaust pipe E.

v Anengine of the construction above-described operates with very litt-le noise, there j is no possibility of carbon becoming de- 13 posited on the valves and thus preventing the valves from closing tightly; and another desirable feature of the engine is that the inlet and exhaust ports can be made large enough to permit a large volume of gas to be drawn into the cylinders. The valves which 'control' the admission and exhaust of the gases are inoased in Water-jacketed chambers which have top and bottom Walls that bear against both faces of the valves so that there is little danger of the valves warping and the valves are reinforced and strengthened further by annular flanges on the peripheries thereof.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patentis:

l. In'an internal combustion engine,-a cylinder provided With an integral top Wall, a

removable Water-jacketed head spaced away from-said top Wall so as to form a valve chamber, a bearing on the under side of said head at the center of said valve chamber, a disk-shaped valve arranged in said chamber and rotatably mounted -0n said bearing, said valve being provided with ports that register with alining ports formed 'in the head and in the top Wall of thecylinder, and a spark plug mounted in said cen- .ter bearing and projectingv` into said cylinder.

2. In an internal combustion engine, acylinder provided with an integral top Walla from said top'wall so as to form a valve chamber, a bearing on the under side of said head at the center of said valve chamber, a disk-shaped valve arranged in said chamber and rotatably mounted on said bearing, said valve being provided with ports that register With alining ports formed in the head and in the top Wall of the cylinder, a spark plug mounted in said center bearing and projecting into said cylinder, a reinforcing and'strengthening ange on the peripheral removable water-jacketed head spaced away Y edge of said valve that prevents the valve 

